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Q: The commonly used lime in white washing is
  • A. quicklime
  • B. fat lime
  • C. lean lime
  • D. hydraulic lime
Correct Answer: Option B - Fat lime : • Fat lime is commonly used for plastering and white washing. • Fat lime will not set under water. Quick lime : Calcium oxide (CaO), commonly known as quick lime or burnt lime, is a widely used chemical compound. it is a white, caustic, alkaline, crystalline solid at room temperature. Lean lime : It is used in rough masonry work. Hydraulic lime – • It has ability to set under water in thick damp condition with no air circulation. • Used in foundation of underwater work.
B. Fat lime : • Fat lime is commonly used for plastering and white washing. • Fat lime will not set under water. Quick lime : Calcium oxide (CaO), commonly known as quick lime or burnt lime, is a widely used chemical compound. it is a white, caustic, alkaline, crystalline solid at room temperature. Lean lime : It is used in rough masonry work. Hydraulic lime – • It has ability to set under water in thick damp condition with no air circulation. • Used in foundation of underwater work.

Explanations:

Fat lime : • Fat lime is commonly used for plastering and white washing. • Fat lime will not set under water. Quick lime : Calcium oxide (CaO), commonly known as quick lime or burnt lime, is a widely used chemical compound. it is a white, caustic, alkaline, crystalline solid at room temperature. Lean lime : It is used in rough masonry work. Hydraulic lime – • It has ability to set under water in thick damp condition with no air circulation. • Used in foundation of underwater work.